NDLI: Efficient Tracing of Global Isolates of Yersinia pestis by Restriction Fragment Length Polymorphism Analysis Using Three Insertion Sequences as Probes†

Content Provider	PubMed Central
Author	Torrea, Gabriela Viviane, Chenal-francisque Leclercq, Alexandre Elisabeth, Carniel
Copyright Year	2006
Abstract	Yersinia pestis is the etiologic agent of plague, a disease that is transmitted from rodent to rodent and from rodent to humans by fleabites. Multiple copies of three insertion sequences (IS100, IS285, and IS1541) are scattered over the Y. pestis genome. The genomic instability generated by these insertion sequences (IS) creates a polymorphism of the hybridizing restriction fragments (restriction fragment length polymorphism [RFLP]) which can be used to subtype this relatively clonal species. The aim of this work was to evaluate and compare the potential of the three IS-RFLP techniques, individually or in combination, to define clusters of strains according to their focus of origin. The analysis of 61 Y. pestis isolates of worldwide origin indicated that no satisfactory strain clustering was observed with each IS-RFLP used individually. In contrast, the combination of the three IS-RFLP data (3IS-RFLP) resulted in both an efficient strain discrimination (D = 0.999) and a robust clustering of the isolates according to their biovar and geographical origin. This geographical clustering was observed even within the Orientalis group, although these strains had only a short period of time (one century) to diverge from the original clone that spread globally. Therefore, 3IS-RFLP is a technique that may be useful for addressing epidemiological problems and forensic issues. When plague reemerges after several decades of silence in a quiescent focus, it may help in determining whether the disease was reimported or reactivated. It may also be of value to identify the origin of a strain when plague cases appear in a previously plague-free region. Finally, this technique could be useful for the tracing of a Y. pestis isolate that has been used as a biological terrorism threat.
Related Links	http://dx.doi.org/10.1128/jcm.02618-05
Ending Page	2092
Page Count	9
Starting Page	2084
File Format	PDF
ISSN	00951137
e-ISSN	1098660X
Journal	Journal of Clinical Microbiology
Issue Number	6
Volume Number	44
Language	English
Publisher	American Society for Microbiology
Publisher Date	2006-06-01
Access Restriction	Open
Rights Holder	American Society for Microbiology
Subject Keyword	Microbiology (medical) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Microbiology (medical)

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